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113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_5236
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# title: IN/ANY/ALL predicates may cause sub-optimal (late filtering) execution of joins
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# decription:
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# Plan BEFORE fix was (confirmed on 4.0.0.258):
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# ...
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# Select Expression
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# -> Filter
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# -> Nested Loop Join (inner) <<<<<<< no filter of "DP_REGISTRO" table
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# -> Table "DP_REGISTRO" Full Scan <<<<<<< after it was scanned
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# -> Filter
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# -> Table "DP_RECIBO" Access By ID
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# -> Bitmap
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# -> Index "UNQ1_DP_RECIBO" Range Scan (partial match: 1/2)
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#
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# Plan AFTER fix (confirmed on 4.0.0.313):
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# ...
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# Select Expression
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# -> Nested Loop Join (inner)
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# -> Filter <<<<<<<<<<<<<<<<<<<<<<<<<<< EARLY FILTERING MUST BE HERE <<<<<
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# -> Table "DP_REGISTRO" Full Scan
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# -> Filter
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# -> Table "DP_RECIBO" Access By ID
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# -> Bitmap
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# -> Index "UNQ1_DP_RECIBO" Range Scan (partial match: 1/2)
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#
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#
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# tracker_id: CORE-5236
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# min_versions: ['3.0.1']
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# versions: 3.0.1
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# qmid: None
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 3.0.1
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# resources: None
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substitutions_1 = []
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init_script_1 = """
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recreate table dp_registro_oest(
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autoinc_registro int primary key using index pk_dp_registro_oest,
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registro_pri_roest integer not null,
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registro_sec_roest integer not null
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);
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recreate table dp_recibo(
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codigo_rec bigint primary key,
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registro_rec integer not null,
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competencia_rec varchar(6) not null,
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unique(registro_rec, competencia_rec) using index unq1_dp_recibo
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);
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recreate table dp_registro(
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autoinc_registro integer primary key using index pk_dp_registro
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);
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alter table dp_registro_oest
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add constraint fk_dp_registro_oest_1 foreign key (registro_pri_roest)
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references dp_registro (autoinc_registro) on update cascade
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,add constraint fk_dp_registro_oest_2 foreign key (registro_sec_roest)
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references dp_registro (autoinc_registro) on update cascade
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,add constraint unq1_dp_registro_oest unique (registro_pri_roest, registro_sec_roest)
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;
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commit;
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"""
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db_1 = db_factory(sql_dialect=3, init=init_script_1)
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test_script_1 = """
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set explain on;
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select 1
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from dp_recibo
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inner join dp_registro on dp_registro.autoinc_registro = dp_recibo.registro_rec
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where
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dp_registro.autoinc_registro in (
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select registro_sec_roest
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from dp_registro_oest
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where registro_pri_roest = 1
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)
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;
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"""
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act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """
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Select Expression
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-> Filter
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-> Filter
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-> Table "DP_REGISTRO_OEST" Access By ID
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-> Bitmap
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-> Index "UNQ1_DP_REGISTRO_OEST" Unique Scan
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Select Expression
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-> Nested Loop Join (inner)
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-> Filter
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-> Table "DP_REGISTRO" Full Scan
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-> Filter
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-> Table "DP_RECIBO" Access By ID
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-> Bitmap
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-> Index "UNQ1_DP_RECIBO" Range Scan (partial match: 1/2)
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"""
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@pytest.mark.version('>=3.0.1')
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def test_1(act_1: Action):
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act_1.expected_stdout = expected_stdout_1
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act_1.execute()
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assert act_1.clean_stdout == act_1.clean_expected_stdout
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